Study on preparation,characterization and application of mixed-colorants thermochromic microcapsules  

作　　者：Lan Zhou Jingpeng Ye Qinze Cai Guojin Liu Mehran Dadgar Guocheng Zhu Guoqing Zhang 

机构地区：[1]College of Textile Science and Engineering (International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,310018,China [2]School of Materials Science& Engineering,Zhejiang Sci-Tech University,Hangzhou,310018,China [3]Department of Textile,University of Neyshabur,Adib Boulevard,Khorasan Razavi Province,Iran [4]Zhejiang Charming Dyeing and Finishing Co.,Ltd,Jiaxing,314500,China [5]Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing,312000,China

出　　处：《Particuology》2024年第5期89-97,共9页颗粒学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(grant No.22075252);the Key Program for International S&T Innovation Cooperation Projects of China(project No.2022YFE0125900).

摘　　要：In order to expand the color-change range and make the discoloration temperature suitable for the daily textiles,a new formulation of mixed-colorants thermochromic core material is designed,in which crystal violet lactone(CVL)is the basic color former,bisphenol A(BPA)is the developer,especially the solvent-based dye and dodecyl dedecanoate are used as the extended dye and the solvent,respectively.Scanning electron microscope(SEM),differential scanning calorimeter(DSC)and thermogravimetric analyzer(TGA)were applied to study the morphology,encapsulation rate,non-isothermal crystallization behavior and thermal stability of the mixed-colorant thermochromic microcapsules(MCTMs)prepared by in-situ polymerization.The results show that MCTMs have good sphericity,uniform particle size,good thermal stability and the encapsulation rate can reach 86.73%.Under the non-isothermal conditions,the encapsulation of formaldehyde-melamine resin wall material can slightly reduce the crystallization rate of the solvent,but does not affect the relative crystallinity,thermal properties and discoloration sensitivity of the core materials.With the variety of ambient temperatures in the range of 20–35℃,the printed cotton fabrics with MCTMs could change color reversibly between different tones with good reliability and durability,and exhibit more gorgeous colors than the common thermochromic materials.

关 键 词：Thermochromic microcapsule Color-change range Phase-change material Crystallization behavior 

分 类 号：O62[理学—有机化学]